Can a judge ban you from using legal weed just because you’re on probation? In Michigan, as of July 6, the answer is no — not if the only reason is federal law. The Michigan Supreme Court ruled unanimously in People v. Hess that trial courts cannot prohibit marijuana use that complies with state law as a marijuana probation condition simply because cannabis remains federally illegal (CBS Detroit’s report; the opinion itself).
The facts are painfully ordinary, which is why they matter. Danielle Heaven-Leah Hess pleaded guilty to third-degree retail fraud and drew probation with a no-marijuana condition. She tested positive twice. After the second test she argued the obvious: her cannabis use was legal under the state’s voter-approved recreational law, so why is it a probation violation? Lower courts sided with prosecutors, leaning on a probation statute requiring compliance with federal law. The Supreme Court reversed: Michigan’s marijuana law was written precisely to stop arrests and penalties for state-legal use, and when it conflicts with other state statutes, the marijuana law wins.
What the marijuana probation ruling does — and doesn’t — do
The holding kills automatic bans: a judge can’t reflexively write “no marijuana” into probation terms and point at the federal schedules. But the court expressly left open whether judges may restrict cannabis case-by-case — for rehabilitation, substance-abuse treatment, public safety, or when the underlying offense involves marijuana. That question waits for a future case. So no, this is not “everyone on probation can smoke”; it’s “the state that legalized weed has to mean it, even in its own courthouses.” The ACLU of Michigan, which pushed the case, called it exactly that kind of promise-keeping.
The bigger legal signal
Watch the reasoning, not just the result. A unanimous state supreme court — conservatives included — held that a state legalization statute takes precedence over conflicting state statutes, and that federal illegality alone can’t be smuggled in through the back door. That logic radiates into employment disputes, custody fights, housing — anywhere “but it’s federally illegal” gets used as a trump card. It’s the mirror image of what the Pentagon told service members this same week (federal institutions keep their bans): inside a legalization state’s own institutions, the state’s promise controls. The seams between those two worlds — airports, bases, tax law — are where cannabis lawyering lives, as anyone who read our TSA-at-PDX story already knows. And with the rescheduling record now closed, expect more courts to face the question Michigan just answered.
What this means if you’re on probation in Michigan
Practical answers, because people search for them. If your probation order contains a blanket no-marijuana condition and your offense had nothing to do with cannabis, Hess says that condition cannot stand on federal illegality alone — raise it through counsel; do not simply start using and hope. If your judge cites treatment, rehabilitation, public safety, or a cannabis-related offense as the individualized reason, that question remains open after Hess, and violating the condition while it stands is still a violation. And medical patients have an even stronger footing: Michigan courts protected registered patients on probation years before this ruling extended the logic to recreational use.
For the lawyers: the doctrinal move worth quoting is the court’s conflict-of-laws holding — the voter-initiated legalization statute prevails over the general probation statute’s compliance-with-federal-law clause. That elevates MRTMA from an affirmative defense to something closer to a statutory shield, and litigants in employment, housing, and family-court disputes will cite it that way within the year. Watch for prosecutors to push the open individualized-restriction question back up on the next test case — both sides know this opinion decided the easy half.
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